S.I.P NG exhaust change for Malossi 221....

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DS1969
noob
Posts: 1
Joined: Thu Aug 23, 2012 11:04 pm
Main scooter: 68 Vespa Sprint - 221 Malossi
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Hi guys,

I have an S.I.P NG racing exhaust on my Malossi 221, it runs and sounds great..... currently running the aluminium silencer (32mm outlet version)..

I have juts purchased the carbon fibre silencer and this has the 25mm outlet (where the muffler joins to the exhaust with 3 bolts - there are 2 different diameters that S.I.P sell)....
S.I.P state that the 32mm is for touring due to lower heat generated and the 25mm is for higher peak power.

Will I need to re-jet my carb going down to the smaller diameter version?

Cheers in advance...
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